4250040391 has 2 divisors, whose sum is σ = 4250040392. Its totient is φ = 4250040390.

The previous prime is 4250040383. The next prime is 4250040427. The reversal of 4250040391 is 1930400524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4250040391 - 2³ = 4250040383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4250040491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2125020195 + 2125020196.

It is an arithmetic number, because the mean of its divisors is an integer number (2125020196).

Almost surely, 2^4250040391 is an apocalyptic number.

4250040391 is a deficient number, since it is larger than the sum of its proper divisors (1).

4250040391 is an equidigital number, since it uses as much as digits as its factorization.

4250040391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 4250040391 is about 65192.3338361191. Note that the first 3 decimals coincide. The cubic root of 4250040391 is about 1619.8110320405.

The spelling of 4250040391 in words is "four billion, two hundred fifty million, forty thousand, three hundred ninety-one".